1//===-- xray_interface_internal.h -------------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of XRay, a dynamic runtime instrumentation system. 11// 12// Implementation of the API functions. See also include/xray/xray_interface.h. 13// 14//===----------------------------------------------------------------------===// 15#ifndef XRAY_INTERFACE_INTERNAL_H 16#define XRAY_INTERFACE_INTERNAL_H 17 18#include "sanitizer_common/sanitizer_platform.h" 19#include "xray/xray_interface.h" 20#include <cstddef> 21#include <cstdint> 22 23extern "C" { 24 25struct XRaySledEntry { 26#if SANITIZER_WORDSIZE == 64 27 uint64_t Address; 28 uint64_t Function; 29 unsigned char Kind; 30 unsigned char AlwaysInstrument; 31 unsigned char Version; 32 unsigned char Padding[13]; // Need 32 bytes 33#elif SANITIZER_WORDSIZE == 32 34 uint32_t Address; 35 uint32_t Function; 36 unsigned char Kind; 37 unsigned char AlwaysInstrument; 38 unsigned char Version; 39 unsigned char Padding[5]; // Need 16 bytes 40#else 41#error "Unsupported word size." 42#endif 43}; 44 45struct XRayFunctionSledIndex { 46 const XRaySledEntry *Begin; 47 const XRaySledEntry *End; 48}; 49} 50 51namespace __xray { 52 53struct XRaySledMap { 54 const XRaySledEntry *Sleds; 55 size_t Entries; 56 const XRayFunctionSledIndex *SledsIndex; 57 size_t Functions; 58}; 59 60bool patchFunctionEntry(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled, 61 void (*Trampoline)()); 62bool patchFunctionExit(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled); 63bool patchFunctionTailExit(bool Enable, uint32_t FuncId, 64 const XRaySledEntry &Sled); 65bool patchCustomEvent(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled); 66bool patchTypedEvent(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled); 67 68} // namespace __xray 69 70extern "C" { 71// The following functions have to be defined in assembler, on a per-platform 72// basis. See xray_trampoline_*.S files for implementations. 73extern void __xray_FunctionEntry(); 74extern void __xray_FunctionExit(); 75extern void __xray_FunctionTailExit(); 76extern void __xray_ArgLoggerEntry(); 77extern void __xray_CustomEvent(); 78extern void __xray_TypedEvent(); 79} 80 81#endif 82